Substantial similarity is one of the most important and elusive concepts in copyright law. It is the key element that determines a central question in the field: What constitutes the wrongful copying of subject matter such as fiction, nonfiction, music, visual art, audiovisual works, and computer programs? The first reference to fully discuss this pivotal subject, PLI s Substantial Similarity in Copyright Law remains the clearest and most comprehensive reference to address it. Covering the Copyright Act and key court decisions, Substantial Similarity in Copyright Law lucidly examines the principal substantial similarity tests used by the various circuit courts to assess whether the copying of specific subject matter is sufficient to support a conclusion of copyright infringement. Packed with illustrations from actual infringement cases, this wide-ranging reference enables you to see how this vital concept is practically applied in the particular jurisdiction in which you re practicing, enhancing your ability to readily serve clients in copyright disputes. Updated at least once a year, Substantial Similarity in Copyright Law is a practical, hard-working tool for copyright specialists and other intellectual property attorneys, an important guide for generalists who handle copyright cases, and useful reading for plaintiffs and defendants in copyright litigation.